A.As many as
B.So many as
C.As much as
D.As more as
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A.Increased draft
B.Pitch
C.Roll
D.Change in trim
A.one-millionth part of a second
B.one-thousandth part of a second
C.one-hundredth part of a second
D.one-tenth part of a second
A.persistence
B.pulse repetition rate
C.pulse length
D.rotation rate
A.carrier frequency
B.pulse repetition rate
C.pulse length
D.pulse repetition time
A.magnetron
B.receiver
C.indicator
D.modulator
最新試題
A radar contact will remain stationary on a relative motion radar display only when it is（）.
Compass error is equal to the（）.
A radar display in which North is always at the top of the screen is a(n)（）.
The number of pulses of energy transmitted per second is call the（）.
Compass deviation is caused by（）.
A FICTIVE LINE DISPLAYED ON THE RADAR SCREEN SEPARATING THE FAIRWAY FOR INBOUND AND OUTBOUND VESSELS SO THAT THEY CAN SAFELY PASS EACH OTHER defines（）.
You are using a radar in which your own ship is shown at the center，and the heading flash always points to 0°. If bearings are measured in relation to the flash，what type of bearings are produced?（）.
（）20 targets can be tracked at one time．When maximum tracking capacity is reached，no further acquisitions are possible.
A Doppler log in the volume reverberation mode indicates（）.
（）the canal transit，the radar was operating.